Speed pulley

a cone pulley with steps.

See also: Speed

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The crank moved one side of the adjustable speed pulley through a lever system, pushing against a thrust bearing.
The machine comes standard with a variable speed pulley, which allows for easy synchronisation to the speed of the conveyor or carousel.
As the machine is adjusted to faster or slower speeds, the accelerator, threshing cylinder and rear beater stay in time because they are driven by a common variable - a speed pulley.
These included a 2-cylinder water-cooled 27 hp MHI model KE130 diesel engine, a creeper gear that reduced first speed ground speed to 0.20 mph, a rear and a mid 540 or 1-000rpm PTO, and a direct-drive engine speed pulley with electric clutch for a mid-mounted 60-inch rotary mower.